datitisev I would say test it yourself, I can't delete cache right now, sorry.
I checked it out ... clearing the cache wasn't even necessary.
If you go to the front end and compose a post with emoji immediately after disabling the extension, the emoji selector will appear, but the emoji will not be displayed in the post ... exactly what you saw.
But ... if you go to the front end and reload the page after disabling the extension, the emoji selector doesn't show up at all. So it seems to me you were using a page loaded before the extension was disabled.